Why is everyone scared of herobrine. I don't get it. He's just a man with white eyes who wants to kill you. Just get a sword and kill him it's ease. Or get a wolf and kill him. Or slice his body into half and do you want to die or see BLOOD

Lol, we aren't really afraid of him. It's just that he's a rare sight, and rare things bring mystery with them, which cause us to speculate and try to come up with things that will satisfy our curiousity.